Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

For More Weather Information:

Key West, FL Local Forecast Office

3NM SSW Alligator Reef Light FL

Marine Point Forecast

[NOTICE]

Tuesday
High: 77 °F
NNE 15kt
1-3ft
Tuesday Night
Low: 73 °F
ENE 15kt
3ft
Wednesday
High: 77 °F
Light Wind
1-2ft
Wednesday Night
Low: 67 °F
NW 15kt
1ft
Thursday
High: 75 °F
N 10kt
1ft
Thursday Night
Low: 70 °F
NE 10kt
1ft
Friday
High: 77 °F
E 15kt
1-2ft
Friday Night
Low: 73 °F
E 15kt
2ft
Saturday
High: 78 °F
E 15kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:15 am CST Dec 9, 2025
Forecast Valid: 4am CST Dec 9, 2025-6pm CST Dec 15, 2025

View Nearby Observations

Detailed Forecast

Tuesday

NNE wind around 15 kt. Showers likely. Seas 1 to 3 ft.

Tuesday Night

ENE wind 10 to 15 kt. Scattered showers. Seas around 3 ft.

Wednesday

Variable winds 5 kt or less. Scattered showers. Seas 1 to 2 ft.

Wednesday Night

NW wind 10 to 15 kt. Isolated showers. Seas around 1 ft.

Thursday

N wind 5 to 10 kt. Sunny. Seas around 1 ft.

Thursday Night

N wind 5 to 10 kt becoming NE after midnight. Partly cloudy. Seas around 1 ft.

Friday

E wind 10 to 15 kt. Mostly sunny. Seas 1 to 2 ft.

Friday Night

E wind 10 to 15 kt. Isolated showers. Seas around 2 ft.

Saturday

E wind 10 to 15 kt. Scattered showers. Seas around 2 ft.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.